The term 'DOUBLE' can be broken down into two prefixes: diplo and twi. Diplo is a five-letter prefix derived from the Greek word 'diploos, ' meaning 'DOUBLE.' It is commonly used in scientific terms to refer to something that is TWICE as large or TWICE as much. For example, a diploid cell has two sets of chromosomes. Twi is a three-letter prefix derived from the Latin word 'TWICE, ' meaning 'TWICE as much.' It is often used in medical terminology to refer to something that is TWICE the normal size or amount. For example, a twinge is a sudden, sharp pain that lasts for a short period of time.